http://bugs.winehq.org/show_bug.cgi?id=33521
--- Comment #13 from Jeff Cook jeff@deseret-tech.com 2013-06-22 19:06:50 CDT --- I can compile successfully using the patch posted by Roland, with Arch Linux's gcc-multilib 4.8.1-1.
Will play around with the resultant build and report here if there are problems.